Heraclius, with Martina and Heraclius Constantine (610-641) AE Follis (Bronze, 8.41g, 19mm) Thessalonica.
Obv: Heraclius, Heraclius Constantine, and Martina standing facing, each holding cross; small crosses in upper field.
Rev: Large M, cross above; A/N/N/O to left, X/X to right; B below; ΘEC in exergue.
Ref: Sear 825.